本来用的好好的，不知道怎么就挂了，每次调试xslt都会出错，然后只能关闭重启，然后又出错。。。
火了，重装，还没有解决问题，冲动啊，浪费两个小时
网上查了一下
http://social.msdn.microsoft.com/Forums/da-DK/vssetup/thread/d3608a82-62b7-43d8-9864-e86232c17d01
应该是一些配置有问题
1. Open Visual Studio Command Prompt (2010) under Start menu -> All Programs -> Microsoft Visual Studio 2010 -> Visual Studio Tools (run it with Administrator privilege: right-click the program -> Run as administrator);
2. Try some devenv switches in command prompt:
a. Run devenv /Resetsettings to eliminate the cause of corrupted settings.
b. Run devenv /ResetSkipPkgs in Command Prompt.
c. Run devenv /Safemode to see if you can apply it correctly. This can eliminate the possibility that third party Add-ins or packages are causing problems.
3. Reboot the machine in Safe Mode. This can isolate some third party application/driver's interference.
4. Switch and try a new user account. This can rule out the possibility of corrupted user profile.
2.a，就把问题解决了